| Melsele to Oignies | 76.51 mi (123.13 km) |
| Melsele to Oissel | 191.52 mi (308.23 km) |
| Melsele to Olivet | 255.30 mi (410.86 km) |
| Melsele to Ollioules | 563.16 mi (906.32 km) |
| Melsele to Olonne-sur-Mer | 424.51 mi (683.18 km) |
| Melsele to Oloron-Sainte-Marie | 599.84 mi (965.35 km) |
| Melsele to Onet Village | 480.06 mi (772.57 km) |
| Melsele to Onnaing | 64.84 mi (104.34 km) |
| Melsele to Orange | 489.97 mi (788.54 km) |
| Melsele to Orchies | 68.60 mi (110.40 km) |
| Melsele to Orleans | 252.70 mi (406.68 km) |
| Melsele to Orly | 190.59 mi (306.73 km) |
| Melsele to Ormesson-sur-Marne | 185.19 mi (298.04 km) |
| Melsele to Orsay | 197.58 mi (317.98 km) |
| Melsele to Orthez | 583.94 mi (939.75 km) |
